Hello annointed,
The mixer should have installed during the install of your audio software.
If you have your Acer CD you can load your CD & look for the driver folder & open it. Find Audio or Sound folder.
Re-install your driver software.
You can open the link below that will open Acer's PDF file that contains your audio software. Depending on which sound device you have in your notebook.
Acer sucks at maintaining the correct drivers for their model no#.
Though you can find the Aspire 5570-2609 notebook, Acer does not list their driver's as 5570-269. They only list Aspire 5500-5570. For the 5570 click here & goto pg. 2
Audio driver v.5.10.0.5273
Windows XP AS3680_Audio.zip
http://www.acerpanam.com/synapse/forms/AcerDrivers/Aspire%205570.pdf?CFID=40052&CFTOKEN=54644383
For the Aspire 5500 goto this link:
http://www.acerpanam.com/synapse/forms/AcerDrivers/Aspire%205500.pdf?CFID=40052&CFTOKEN=54644383
Page 2.
5500Z - Realtek Audio Driver v5.10.0.5820
Windows XP
AS5500Z_Audio.zip
Good luck!
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